/[cvs]/nfo/perl/libs/Data/Storage/Handler/Tangram.pm
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revision 1.33 by joko, Wed Apr 9 06:07:43 2003 UTC revision 1.48 by jonen, Thu Oct 28 11:35:51 2004 UTC
# Line 3  Line 3 
3  #  $Id$  #  $Id$
4  #  #
5  #  $Log$  #  $Log$
6    #  Revision 1.48  2004/10/28 11:35:51  jonen
7    #  + bugfix related to select-criterias(filter)
8    #
9    #  Revision 1.47  2004/08/31 14:26:08  jonen
10    #  updated
11    #
12    #  Revision 1.46  2004/05/06 12:54:34  jonen
13    #  + bugfix related to multiple select-'filter'
14    #
15    #  Revision 1.45  2003/12/14 01:48:36  jonen
16    #  small HACK at _insertChildNode: some special Childnodes should not be created because existing objects have to be selected!
17    #  TODO: make this more generic, e.g. implement a special flag at Schema
18    #
19    #  Revision 1.44  2003/12/04 01:01:50  joko
20    #  + sendQuery now returns result even on crud=UPDATE
21    #
22    #  Revision 1.43  2003/07/02 11:07:12  jonen
23    #  re-activate filtering of results *after* results are fetched from tangram
24    #    (needed for e.g. UserManagment)
25    #
26    #  Revision 1.42  2003/07/01 23:24:17  joko
27    #  now using package before using function
28    #
29    #  Revision 1.41  2003/06/29 02:03:45  joko
30    #  fix:? initialize schema on startup
31    #
32    #  Revision 1.40  2003/06/25 22:57:54  joko
33    #  major rework of "sub sendQuery / sub getListFiltered": now should be capable of "sorting"
34    #
35    #  Revision 1.39  2003/06/06 11:40:40  jonen
36    #  fixed bug at 'getFilteredList'
37    #
38    #  Revision 1.38  2003/05/13 16:38:38  joko
39    #  problems with "tied" on 5.6.1/win32
40    #
41    #  Revision 1.37  2003/05/10 17:37:39  jonen
42    #  corrected last commit
43    #
44    #  Revision 1.36  2003/05/10 17:31:18  jonen
45    #  + added new functions related to 'create' item
46    #   - createNode()
47    #     # creates non-persistent 'deep dummy filled' object
48    #   - insertChildNode()
49    #     # inserts child node at given parent (child node haven't to exists,
50    #         createNode will be injected transparently)
51    #
52    #  Revision 1.35  2003/04/19 16:09:48  jonen
53    #  + added operator dispatching (currently for getting ref-type) at 'getListFiltered'
54    #
55    #  Revision 1.34  2003/04/11 01:18:53  joko
56    #  sendQuery:
57    #  + introduced crud action 'DELETE'
58    #
59  #  Revision 1.33  2003/04/09 06:07:43  joko  #  Revision 1.33  2003/04/09 06:07:43  joko
60  #  revamped 'sub sendQuery'  #  revamped 'sub sendQuery'
61  #  #
# Line 136  use base ("Data::Storage::Handler::Abstr Line 189  use base ("Data::Storage::Handler::Abstr
189    
190  use Data::Dumper;  use Data::Dumper;
191  use Tangram;  use Tangram;
192    use Class::Tangram;
193    
194  use DesignPattern::Object;  use DesignPattern::Object;
195  use Data::Storage::Result::Tangram;  use Data::Storage::Result::Tangram;
# Line 145  use Data::Mungle::Transform::Deep qw( ex Line 199  use Data::Mungle::Transform::Deep qw( ex
199  # get logger instance  # get logger instance
200  my $logger = Log::Dispatch::Config->instance;  my $logger = Log::Dispatch::Config->instance;
201    
202    #$Tangram::TRACE = *STDOUT;
203    
204  # this holds the complete instantiated schema from tangram  # this holds the complete instantiated schema from tangram
205  my $schema_tangram;  my $schema_tangram;
# Line 163  sub _initSchema { Line 218  sub _initSchema {
218    #if (!$schema_tangram) {    #if (!$schema_tangram) {
219      #my $obj = getNewPerlObjectByPkgName($self->{locator}->{schema}, { EXPORT_OBJECTS => $self->{locator}->{classnames}, want_transactions => $self->{locator}->{want_transactions} } );      #my $obj = getNewPerlObjectByPkgName($self->{locator}->{schema}, { EXPORT_OBJECTS => $self->{locator}->{classnames}, want_transactions => $self->{locator}->{want_transactions} } );
220      my $obj = DesignPattern::Object->fromPackage($self->{locator}->{schema}, { 'EXPORT_OBJECTS' => $self->{locator}->{classnames}, 'want_transactions' => $self->{locator}->{want_transactions} } );      my $obj = DesignPattern::Object->fromPackage($self->{locator}->{schema}, { 'EXPORT_OBJECTS' => $self->{locator}->{classnames}, 'want_transactions' => $self->{locator}->{want_transactions} } );
221      $schema_tangram = $obj->getSchema();      $schema_tangram = $obj->getSchema() if $obj;
222    #}    #}
223    if (!$schema_tangram) {    if (!$schema_tangram) {
224      $logger->error( __PACKAGE__ . "->_initSchema: No Schema available for $self->{schema}" );      $logger->error( __PACKAGE__ . "->_initSchema: No Schema available for $self->{locator}->{schema}." );
225      return 0;      return 0;
226    }    }
227    #$self->_patchSchema();    #$self->_patchSchema();
# Line 212  sub connect { Line 267  sub connect {
267  #      return;  #      return;
268  #    }  #    }
269    
270      #return unless $self->_initSchema();      return unless $self->_initSchema();
271      $self->_initSchema();      #$self->_initSchema();
272    
273      # create the main tangram storage object      # create the main tangram storage object
274      #$self->{COREHANDLE} = Tangram::Relational->connect( $schema, $dsn );      #$self->{COREHANDLE} = Tangram::Relational->connect( $schema, $dsn );
# Line 475  sub getListFiltered { Line 530  sub getListFiltered {
530    # redirect to unfiltered mode    # redirect to unfiltered mode
531    #return $self->getListUnfiltered(@_);    #return $self->getListUnfiltered(@_);
532    
533    my $nodename = shift;    my $in = {};
534    my $filters = shift;    $in->{nodename} = shift;
535      $in->{filters} = shift;
536      $in->{sorting} = shift;
537      
538    my @results;    my @results;
539    $logger->debug( __PACKAGE__ . "->getListFiltered( nodename => '" . $nodename . "' )" );    $logger->debug( __PACKAGE__ . "->getListFiltered( nodename => '" . $in->{nodename} . "' )" );
540    
541      #print "Filter_payload: " . Dumper($in->{filters}) . "\n";
542    
543  #print Dumper($filters);    # 1. "Remote Object Handle" - get set of objects from odbms by object name
544      my $remote = $self->{_COREHANDLE}->remote($in->{nodename});
545        
546      # 2. Transfer $in to $orm_query
547      my $orm_query = {};
548      
549      # 2.a. Filters
550    my @tfilters;    my @tfilters;
551      my $orm_filter = undef;
552        
553    foreach my $filter (@$filters) {    foreach my $filter (@{$in->{filters}}) {
554        
555      # get filter - TODO: for each filter      # get filter - TODO: for each filter
556      #my $filter = $filters->[0];      #my $filter = $filters->[0];
557      
558      # build filter      # 1. The parts of a filter source entry
559      my $lexpr = $filter->{key};      my $lexpr = $filter->{key};
560      #my $op = $filter->{op};      #my $op = $filter->{op};
561      my $op = '=';      my $op = '=';
562      my $rexpr = $filter->{val};      my $rexpr = $filter->{val};
563      my $tight = 100;      my $tight = 100;
564    
565        # 2. Build filter target entry
566            
567    #  my $tfilter = Tangram::Filter->new(      # Test 1 - didn't work out!
568    #    expr => "t1.$lexpr $op '$rexpr'",      #  my $tfilter = Tangram::Filter->new(
569    #    tight => $tight,      #    expr => "t1.$lexpr $op '$rexpr'",
570    #    objects => $objects,      #    tight => $tight,
571    #  );      #    objects => $objects,
572        #  );
573    
574        my $orm_filter_tmp = undef;
575        # was:
576        # TODO: is_op?
577        # dispatch un-common operators if exists
578        if ($filter->{op} eq "ref") {
579          # do nothing, results will be filtered later cause 'tangram-filter' doesn't support 'ref' query
580          #print "Filter->op eq 'ref'.\n";
581          #push @tfilters, 'ref($remote->{' . $filter->{key} . '})' . " eq '$filter->{val}'";
582        } else {
583          # HACK: build eval-string (sorry) to get filtered list - please give advice here
584          #push @tfilters, '$remote->{' . $filter->{key} . '}' . " $filter->{op} '$filter->{val}'";
585          # better: calculate expression right here!
586          #push @tfilters, '$remote->{' . $filter->{key} . '}' . " $filter->{op} '$filter->{val}'";
587          
588          #print "key: ", $filter->{key}, "\n";
589          
590          my $left = $remote->{$filter->{key}};
591          #my $r = Tangram::Expr->new( 'string' => "'" . $filter->{val} . "'" );
592          my $right = $filter->{val};
593          my $op = $filter->{op};
594          $orm_filter_tmp = $left->$op($right);
595        }
596    
597        if (!ref($orm_filter)) {
598          $orm_filter = $orm_filter_tmp;
599        } else {
600          $orm_filter = $orm_filter->and($orm_filter_tmp);
601        }
602    
603      }
604    
605      $orm_query->{filter} = $orm_filter;
606        
607      # HACK: build eval-string (sorry) to get filtered list - please give advice here    # debug point:
608      push @tfilters, '$remote->{' . $filter->{key} . '}' . " $filter->{op} '$filter->{val}'";    #print "Filter: " . Dumper($orm_query->{filter}) . "\n";
609    
610      # was:
611    
612      # 2.b. sorting [new as of 2003-06-17]
613      if ($in->{sorting}) {
614        my $sorting_rules = [];
615        my $sorting_order = 'ASC';
616        foreach my $sorting_column (keys %{$in->{sorting}}) {
617          $sorting_order = $in->{sorting}->{$sorting_column} if $in->{sorting}->{$sorting_column};
618          push @$sorting_rules, Tangram::Expr->new( 'string' => $sorting_column );
619        }
620        $orm_query->{order} = $sorting_rules;
621        if ($sorting_order eq 'DESC') {
622          $orm_query->{desc} = 1;
623        }
624    }    }
625    
   my $tfilter = join(' & ', @tfilters);  
626    
627    # get set of objects from odbms by object name    # 3. build and issue query - return result as Tangram::Cursor
   my $remote = $self->{_COREHANDLE}->remote($nodename);  
628        
629    # was:    # coerce hash into array (This is valid in Perl)
630    #@results = $self->{COREHANDLE}->select($object_set, $tfilter);    my @orm_query_args = %$orm_query;
631      # send query (arguments) to orm
632      @results = $self->{_COREHANDLE}->select($remote, @orm_query_args);
633      
634      #my $cursor = $self->{_COREHANDLE}->cursor($remote, @orm_query_args);
635      #return $cursor;
636      #print Dumper(@results);
637    
638    # is:    # is:
639    # HACK: build eval-string (sorry) to get filtered list - please give advice here    # HACK: build eval-string (sorry) to get filtered list - please give advice here
640    my $evalstring = 'return $self->{_COREHANDLE}->select($remote, ' . $tfilter . ');';      #my $evalstring = 'return $self->{_COREHANDLE}->select($remote, ' . $tfilter . $sorting . ');';
641          #print "eval: $evalstring", "\n";
642    #print "eval: $evalstring", "\n";      # get filtered list/set
643          #@results = eval($evalstring);
644    # get filtered list/set      #die $@ if $@;
645    @results = eval($evalstring);  
646    die $@ if $@;    # filter results - NEEDED for e.g. UserManagment !!
647      if ($in->{filters}->[0]->{op} && ($in->{filters}->[0]->{op} eq "ref")) {
648          #print "Filter->op eq 'ref'.\n";
649          my $att_name = $in->{filters}->[0]->{key};
650          my $att_val = $in->{filters}->[0]->{val};
651          my @filtered;
652          foreach(@results) {
653            if(ref($_->{$att_name}) eq $att_val) {
654              push @filtered, $_;
655            }
656          }
657          @results = @filtered;
658      }
659    
660      #print "results: " . Dumper(\@results);
661        
662    return \@results;    return \@results;
663  }  }
# Line 553  sub createSet { Line 687  sub createSet {
687    return $result;    return $result;
688  }  }
689    
690    sub createResult {
691      my $self = shift;
692      my $rh = shift;
693      my $result = Data::Storage::Result::Tangram->new( RESULTHANDLE => $rh );
694      return $result;
695    }
696    
697  sub sendQuery {  sub sendQuery {
698    my $self = shift;    my $self = shift;
699    my $query = shift;    my $query = shift;
# Line 564  sub sendQuery { Line 705  sub sendQuery {
705    # mode = OID|SPECIAL    # mode = OID|SPECIAL
706    my $mode = '';    my $mode = '';
707    my $ident = '';    my $ident = '';
708    my $action = '';    my $crud = '';
709        
710        
711    # dispatch type and mode    # dispatch type and mode
712        
713      # defaults - 1      # defaults - 1
714      if ($query->{options}) {      if ($query->{options}) {
715        $action = $query->{options}->{action};        $crud = $query->{options}->{crud};
716          $crud ||= $query->{options}->{action};
717      }      }
718    
719      # defaults - 2      # defaults - 2
720      $type ||= 'TRANSPARENT';      $type ||= 'TRANSPARENT';
721      $action ||= 'load';      $crud ||= 'RETRIEVE';
722    
723      if ($query->{options}->{OID}) {      if ($query->{options}->{OID}) {
724        $type = 'ITEM';        $type = 'ITEM';
# Line 585  sub sendQuery { Line 727  sub sendQuery {
727            
728      } elsif (my $guid = $query->{options}->{GUID}) {      } elsif (my $guid = $query->{options}->{GUID}) {
729        $type = 'TRANSPARENT';        $type = 'TRANSPARENT';
730        $query->{criterias} = [ { key => 'guid', op => 'eq', val => $guid } ];        if(ref($query->{criterias}) eq 'ARRAY') {
731                push @{$query->{criterias}}, { key => 'guid', op => 'eq', val => $guid };
732          } else {
733            $query->{criterias} = [ { key => 'guid', op => 'eq', val => $guid } ];
734          }
735        }
736        # if operator is different (dispatcher for 'getListFiltered')
737        if (my $op = $query->{options}->{op}) {
738          $type = 'TRANSPARENT';
739          if(ref($query->{criterias}) eq 'ARRAY') {
740            push @{$query->{criterias}}, { key => $query->{options}->{meta_label}, op => $op, val => $query->{options}->{meta_value} };
741          } else {
742            $query->{criterias} = [ { key => $query->{options}->{meta_label}, op => $op, val => $query->{options}->{meta_value} } ];    
743          }
744      }      }
745        
746      # HACK: special case: querying by id does not translate into a common tangram query      # HACK: special case: querying by id does not translate into a common tangram query
# Line 604  sub sendQuery { Line 758  sub sendQuery {
758    if ($type eq 'ITEM' && $ident) {    if ($type eq 'ITEM' && $ident) {
759    
760      if ($mode eq 'OID') {          if ($mode eq 'OID') {    
761          # TODO: review this case!
762        $result = $self->getObject($ident, $query->{options});        $result = $self->getObject($ident, $query->{options});
763            
764      } elsif ($mode eq 'SPECIAL.SYNC') {      } elsif ($mode eq 'SPECIAL.SYNC') {
# Line 635  sub sendQuery { Line 790  sub sendQuery {
790        
791    } elsif ($type eq 'TRANSPARENT') {    } elsif ($type eq 'TRANSPARENT') {
792    
793      if ($action eq 'load') {      if ($crud eq 'RETRIEVE') {
794    
795        my $list = $self->getListFiltered($query->{node}, $query->{criterias});        my $list = $self->getListFiltered($query->{node}, $query->{criterias}, $query->{sorting});
796          #return $list;
797          return $self->createResult($list);
798          
799        #return $self->createSet($object);        #return $self->createSet($object);
800        #return $self->createSet($list);        #return $self->createSet($list);
801        return $self->createSet(@$list);        return $self->createSet(@$list);
# Line 662  sub sendQuery { Line 820  sub sendQuery {
820        #my $res = $self->{COREHANDLE}->select($h, $h->{);        #my $res = $self->{COREHANDLE}->select($h, $h->{);
821        $result = $self->createCursor($query->{node});        $result = $self->createCursor($query->{node});
822    
823      } elsif ($action eq 'save') {      } elsif ($crud eq 'UPDATE') {
824    
825        # Patch current query to be a loader (e.g. change action, remove payload) ...        # Patch current query to be a loader (e.g. change action, remove payload) ...
826        my $childquery = deep_copy($query);        my $childquery = deep_copy($query);
827        $childquery->{options}->{action} = 'load';        $childquery->{options}->{crud} = 'RETRIEVE';
828        delete $childquery->{payload};        delete $childquery->{payload};
829    
830        # ... to use it to fetch fresh object using ourselves (sendQuery).        # ... to use it to fetch a fresh object using ourselves (sendQuery).
831        my $cursor = $self->sendQuery($childquery);        my $cursor = $self->sendQuery($childquery);
832        my $status = $cursor->getStatus();        my $status = $cursor->getStatus();
833        my $object = $cursor->getNextEntry();        my $object = $cursor->getNextEntry();
# Line 678  sub sendQuery { Line 836  sub sendQuery {
836        my $options = { utf8 => 1, php => 1 };        my $options = { utf8 => 1, php => 1 };
837        merge_to($object, $query->{payload}, $options);        merge_to($object, $query->{payload}, $options);
838    
839          #print Dumper($object);
840          
841        # Execute update operation at orm.        # Execute update operation at orm.
842        $self->update($object);        $self->update($object);
843          $result = $self->createResult([ $object ]);
844            
845        } elsif ($crud eq 'DELETE') {
846    
847          # Patch current query to be a loader (e.g. change action) ...
848          my $childquery = deep_copy($query);
849          $childquery->{options}->{crud} = 'RETRIEVE';
850    
851          # ... to use it to fetch a fresh object using ourselves (sendQuery).
852          my $cursor = $self->sendQuery($childquery);
853          my $status = $cursor->getStatus();
854          my $object = $cursor->getNextEntry();
855    
856          $self->erase($object);
857          $self->unload($object);
858    
859        } elsif ($crud eq 'CREATE') {
860          
861          my $nodename = $query->{node};      
862          my $newnode = $self->createNode($nodename);
863          my $id = $self->{_COREHANDLE}->insert($newnode);
864      
865          print "Saved new node $nodename with GUID $newnode->{guid}, OID '$id': " . Dumper($newnode) . "\n";
866          
867          return $newnode;
868    
869      }      }
870    
871    }    }
# Line 835  sub disconnect2 { Line 1020  sub disconnect2 {
1020    $self->{dataStorageLayer}->disconnect();    $self->{dataStorageLayer}->disconnect();
1021  }  }
1022    
1023    
1024    sub createNode {
1025      my $self = shift;
1026      my $classname = shift;
1027    
1028      my $obj = $classname->new();
1029      
1030      my $attr_options = Class::Tangram::attribute_options($classname);
1031      #print "Attribute Options: " . Dumper($attr_options);
1032    
1033      my $attr_types = Class::Tangram::attribute_types($classname);
1034      #print "Attribute Types: " . Dumper($attr_types);
1035      
1036      foreach(keys %{$attr_types}) {
1037        if($attr_types->{$_} eq 'string') {
1038          $obj->{$_} = '';
1039        } elsif($attr_types->{$_} eq 'int') {
1040          $obj->{$_} = 0;
1041        } elsif($attr_types->{$_} eq 'real') {
1042          $obj->{$_} = 0;
1043        } elsif($attr_types->{$_} eq 'rawdatetime') {
1044          $obj->{$_} = '0000-00-00 00:00:00';
1045        } elsif($attr_types->{$_} eq 'ref') {
1046          if($attr_options->{$_}->{class}) {
1047            # HACK!!!
1048            # STANDALONE Objects (objects which make sense to instanciat alone) should not created automaticly
1049            # because they maybe exists and should only be SETTED not CREATED!
1050            # TODO: Create a flag at the scheme for that reason!
1051            #   (e.g child_node => 1 for child-nodes only like e.g. UserData)
1052            if($attr_options->{$_}->{class} eq 'NetPerson' || $attr_options->{$_}->{class} eq 'Event' || $attr_options->{$_}->{class} eq 'BetRule') {
1053              #$obj->{$_} = undef();
1054            } else {
1055              $obj->{$_} = $self->createNode($attr_options->{$_}->{class});
1056            }
1057          } else {
1058            #$obj->{$_} = undef();
1059          }
1060        } elsif($attr_types->{$_} eq 'iarray') {
1061            $obj->{$_} = [ ];
1062        } elsif($attr_types->{$_} eq 'hash') {
1063            $obj->{$_} = {  };
1064        } elsif($attr_types->{$_} eq 'flat_hash') {
1065            $obj->{$_} = { };
1066        }
1067      }
1068      
1069      #print "New Object: " . Dumper($obj);
1070      
1071      return $obj;
1072    }
1073    
1074    
1075      sub insertChildNode {
1076        my $self = shift;
1077        my $child_entry = shift;
1078        my $query_args = shift;
1079        
1080        my $core = $self->{_COREHANDLE};
1081        my $nodename = $query_args->{nodename};
1082        
1083        # get parent object
1084        my $query = {
1085              node => $query_args->{parent}->{nodename},
1086              options => { GUID => $query_args->{parent}->{guid}, },
1087              };
1088        my $cursor = $self->sendQuery($query);
1089        my $parent = $cursor->getNextEntry();
1090    
1091        # debug
1092        #print "Parent_org: " . Dumper($parent);
1093            
1094        # Create child node object if isn't already done
1095        # ($child_entry have to be the class name then...)
1096        if(!ref($child_entry)) {
1097          $child_entry = $self->createNode($child_entry);
1098          # it could be insert 'manually' or will be insert 'transparent' if parent will be updated
1099          #$core->insert($child_entry);
1100          #print "Create child object [$nodename]: " . Dumper($child_entry);
1101        }
1102    
1103        # get reference of tied node (seems, only on Linux node's are tied!!)
1104        my $tied_node = tied $parent->{$nodename};
1105    
1106        # insert/change child entry at parent
1107        #print "reference: " . ref($parent->{$nodename}) . "\n";
1108        if(ref($parent->{$nodename}) eq 'ARRAY') {
1109          # (seems, only on Linux node's are tied!!)
1110          if($tied_node) {
1111            # all tangram types are tied as 'SCALAR' with special 'FETCH', 'STORE' methods per type,
1112            # so a 'PUSH' is not implemented (which could be then done transparently)
1113            my $array = $tied_node->FETCH;
1114            push @$array, $child_entry;
1115            $tied_node->STORE($array);
1116            # node will be normaly untied at 'STORE'
1117            if(tied $parent->{$nodename}) { print "already tied !!\n"; }
1118            else { undef $tied_node; }
1119          } else {
1120            push @{$parent->{$nodename}}, $child_entry;
1121          }
1122        }
1123        elsif(ref($parent->{$nodename}) eq 'HASH') {
1124          if(my $key = $query_args->{hash_key}) {
1125            # (seems, only on Linux node's are tied!!)
1126            if($tied_node) {
1127              # same problem as with 'ARRAY':
1128              # all tangram types are tied as 'SCALAR' with special 'FETCH', 'STORE' methods per type.
1129              my $hash = $tied_node->FETCH;
1130              $hash->{$key} = $child_entry;
1131              $tied_node->STORE($hash);
1132              # node will be normaly untied at 'STORE'
1133              if(tied $parent->{$nodename}) { print "already tied !!\n"; }
1134              else { undef $tied_node; }
1135            } else {
1136              $parent->{$nodename}->{$key} = $child_entry;
1137            }
1138          } else {
1139           print "ERROR: No HASH KEY given, so not able to insert hash entry!";
1140          }
1141        }
1142        else {
1143          $parent->{$nodename} = $child_entry;
1144        }
1145    
1146        # debug
1147        #print "Parent_new: " . Dumper($parent);
1148        
1149        # save parent
1150        $core->update($parent);
1151        
1152        # debug
1153        #print "Saved Parent: ". Dumper($parent);
1154        
1155        return $child_entry;
1156      }
1157    
1158    
1159  1;  1;
1160  __END__  __END__
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